StringWriter writer = new StringWriter();
		HtmlDocumentBuilder builder = new HtmlDocumentBuilder(writer);
		builder.setEmitAsDocument(false);
		MediaWikiLanguage lang = new MediaWikiLanguage();
		lang.configure(conf);
		lang.setInternalLinkPattern("{0}");
		MarkupParser parser = new MarkupParser(lang, builder);
		parser.parse("''text1''");
		System.out.println(writer.toString());
		writer.flush();
		parser.parse("'''text2'''");
		System.out.println(writer.toString());

Exception in thread "main" java.lang.NullPointerException
	at org.eclipse.mylyn.wikitext.core.util.DefaultXmlStreamWriter.writeStartElement(DefaultXmlStreamWriter.java:322)
	at org.eclipse.mylyn.wikitext.core.parser.builder.HtmlDocumentBuilder.beginBlock(HtmlDocumentBuilder.java:798)
	at org.eclipse.mylyn.internal.wikitext.mediawiki.core.block.ParagraphBlock.processLineContent(ParagraphBlock.java:66)
	at org.eclipse.mylyn.wikitext.core.parser.markup.MarkupLanguage.processContent(MarkupLanguage.java:184)
	at org.eclipse.mylyn.internal.wikitext.mediawiki.core.AbstractMediaWikiLanguage.processContent(AbstractMediaWikiLanguage.java:97)
	at org.eclipse.mylyn.wikitext.core.parser.MarkupParser.parse(MarkupParser.java:91)
	at org.eclipse.mylyn.wikitext.core.parser.MarkupParser.parse(MarkupParser.java:81)
	at html.HtmlLinks.setText(HtmlLinks.java:63)
	at javax.swing.JEditorPane.<init>(Unknown Source)
	at html.HtmlLinks.<init>(HtmlLinks.java:35)
	at html.HtmlLinks.main(HtmlLinks.java:106)